https://doi.org/10.1351/goldbook.D01752
A @[email protected] formed (actually or conceptually) by @[email protected] of two neutral moieties, the combination of which results in charge-separated structures, e.g.
D01752.png
The term is preferred to the obsolescent synonyms '@[email protected]', '@[email protected]', '@[email protected]', 'semipolar bond'.